Nailing-machine.



Wl OEHM & H. R. KEITHLEY. NAILING MACHINE. M'PLlcATloN HLED Nov. 14,'1917.

1,286,740., Patnted Dec. 3, 1918.

3 SHEETS-SHEET I. v

mi@ Fgz w. N. oEHM & H. R. KEITHLEY. NAILING MACHINE. APPLICATION FILED NOV I4. I9IT.

3 SHEETS-SHEET 2.

l Patented Dec. 3, 1918.

W.IN. OEHM & H. R. KEITHLEY. NMLING MACHINE.

` APPLICATION FILEDNOV. I4. T917. 1,286,740, Patented Dec. 3, 1918.

v SHEET 3- 3. SHEETS- WILLIAM Iv. camu am: HERBERT n.. KEITHLEY," or MICHIGAN CITY, INDIANA, Assrenons ro Has-.Kann a manna can co. INC., a oonroaarron or New I YORK.

:minnie-MACHINE.

Lasarte.

neceation of Letters Patent.

` rammen nee. a, raie.

Application led November lll, 1917. Serial No. 201,995.

To all whom it 'may concern: A

Beit known that we, WILLIAM N. EHM and HERBERT R. KEITHLEY, citizens of the United States, and residents of Michigan City, county of Laporte, and State of 1n diana, have invented certain new and use i ful Improvements in Nailing-Machines, of

which the following isl a specication and which are illustrated in the accompanying drawings, forming a part thereof.

The invention relates to machines for driving nails, and iS especially adapted for heavy Work, such as the nailing of'car flooring. Its object is to simplify the nailing operation, and to simplify and increase the eiiiciency of nailing machines.

An embodiment of the invention is herevinaiter fully described, and is illustrated in the accompanying `drawings in which* Figure 1 is aside elevation of the machine, supported on a door, shown in section; v

F ig. 2 is a plan view of the machine:

Fig. 3 is a detail central vertical section through the nail drum and feed chute, on the line 3 3 of Fig. 2;

Fig. fi is an end elevation of the machine, a door board being shown in section;

Fig. 5 is a detail, partly in section, of the nail drum;

Fig. 6 is a detail of a locking 'bar for securing parte of the drum together when removed from the machine; V

Fig. 'i' is a detail otthe nail-positioning device; and

Fig. 8 is a detail of the ratchet and pawl mechanism usedin the device.

10, which may, as shown, be built up of an-' gle bars. This frame is supported upon wheels, as 11, 12, and for convenience in guiding the apparatus some or these wheels may be in the form of casters, as shown. A handle 13 rises from the frame to suitable position to enable the operator to grasp it. The nails X are carried in a cellular rotatabledrum 14 mounted on the frame, from which they are singly discharged through a chute y1,5 to a slotted positioning device 16, the nail being supported under the head 1? of a pneumatic hammer 18, mounted on a suitable bracket 19 extending laterally from the frame 10.

The hammer is of any approved form of known construction, and is so positioned that its handle 20 is within convenient reach of one hand of the operator while his other hand grasps the controlling handle 13. The

hammer will, of course, be connected with a suitable -source of air pressure, and Willbe provided with a controlling valve positioned,

for operation by a finger of the hand grasping the handle 20. These "details, being of common construction are not shown. yThe hammer 18 is slidable through thevbr-acket 19, in order that it may be advanced to the work, and is returned to its,upper position by means of a spring 21 coiled about its barrel and reacting between a shoulder thereon and the bracket-19.

The drum le is built up of a plurality of concentric annular bands, as 22, here shown .as iive in number, and transverse partitions, as 23, 2a, thereby forming, in the disclosed embodiment, four circular series of nail cells. The described elements of the drum are secured together, as shown in Fig. 5, by vertically slotting each through half of its width the bands and partitions being thus interlocked. Preferably thepartitions 23, which,

v as hereinafter described, are` secured to the framework of the drum, are slotted from above, the bands 22 having complementary slots from below,-these partitions thus forming supports for the bands. By slotting the intermediate partitions 24 from be-4 low and forming the complementary slots in the bands from above, these partitions are supported by the bands. rlhe elements of the drum, may, it desired, be soldered together.

The supporting partition plates 23 are as numerous as may be requirci for strength, eight being shown in the drawings. ilhese plates project inwardly and are secured, as by means of rivets 25, to uprights 26 rigidly attached at their lower wheel 27, the hub of which is supported von ball bearings 28 carried by the frame 10. To the upper ends of the uprights 26 there is attached a plate 29, to which issecured a handle 30 by which the drum may be ,lifted fromthe machine and carried. The bottom of the drum takes the form `oi" an annular plate 31, upon which the nails X rest. This plate is not rigidly attached to "the other ends to a ratcheti .loosely through apertures in the plate.

ded with a radial- The plate 31 is provi 'slot 34, which ts upon a slide plate 35 fixed upon the upper -endof thechute and apertured lin line'therewith; IThe plate =35 and chute 15 are movable radially as to the drum to aline the chute `with the several e sets of drum-cells? When #the lchute occupies the positionas-'shown inA Fig. 3, the nails in the outer series of cells will enter it succes'- 15 sively as theldruin'is rotated. This'series of cells being emptiedgthe yoperator pushes in the c liute'to aline it successively with the several inner series of cells.

movement byjnieans of ratchet and pawl mechanism,- the 1 ratchet teeth 36 being formed on the periphery of the lwheel 27, land a pawl 37, advanced by a spring 37, cooperating with yhese teeth,.being controlled by means of a Abell-crank 38 actuated by a stirrup 39 attached to the hammer 18. Upon the recession of the hammer under the iniuence ofthe spring 21, the pawl is drawn backwardlyto move the ratchet wheel, and- 80 with it tlie drum, one step, each step bei'jg the width of onelof'the nail cells.

The drum is rotated with la stepby step 4 The nail-positioning device 16 comprises a` plate, longitudinally slotted', as shown at 40, which is attached to a hub 41 turning on a bar 42 fixed to the frame 10. The slot 40 is in line with the chute 15, so that a naily dropping from the latter`enters this slot, which, however, is diameter of the nail head. The plate 16 is normally .inclined and the slides toward its end, which is slightly up-r turned, naslshown at 43, to arrestit in line with the head 17"ofthe hammer. As the nail is driven down by the hammer the' plate 45 16 swings backwardly and is entirely withbefore the head of the latter reachesits desi 'tination A counterweight 44 swings the.

plate 16 upwardly as the hammer is- .with' drawn by the spring 21. This counterweight is adapted to balance the plate 16 when carrying a nail, and to adapt the machine for use' in'connection with nails of various sizes the counterweight is radially adjustable, as

$5 shown, with reference to the hub 41.

In ractice itis desirable to provide .a plurality of'drums in connection with each machine, 1n order that while one of them is n in service others may be in process ofloading. The plate 31 is locked to the 4drum .machine .by means of a U-shaped bar 45, which maybe thrust in between it and the ratchet wheel 27, as indicated by dotted 6 5 lines in `Fig. 3.

" the nails fromvthe chute, guide them toward fand releasably -suspend them in the path of of less width than the;

- tudinally through nail, therefore,

drawn from engagement withthe hammer' to receive, guide toward the hammer and leasablyl support a nail under the head, the

- frame forthe purposeof removal from the i For supporting and guiding the chute 15," it is provided with a plate 46, extending laty erally in each direction and riding upon the top members of the frame 10, its ends being fitted under a pa'r of plates' 47, 48, mounted upon such member.

V While a preferred embodiment of the invention is shown and described, we do not desire to be limited to the exact construction shown, as various changes may be made withoutdeparting from the scope of the invention. We claimjas our invention e 1. -In a nailing'machine, in combination, a nail containera vertical chute delivering therefrom, 'means for discharging nails singly from the container to the chute, a reciprocating hammer'head, and a tilting 'plate extending downwardly'toward and crossing the path of the head and adapted to receive thehead.

2. vIn a nailing machine, in combination, a c suitable frame, a rapidly reciprocable hainmer head', a counterweighted arm pivotally attached to the 'frameV including a resilient .a portion normally projecting in an\inclined position into the path of the head, such resilient portion being slotted from its end to receive' and releasably support a nail under the head. 3. In a nailing machine, in combination, Va suitable frame, a reciprocable hammer head, a counterweighted armpivotally attached to v the; frame and normally projecting, in a downwardly inclined position into the path of the head, such arm being slotted longiits body portion to itsouter end and having its end upturned, whereby a nail entering the inner end of the slot is vided to and supported in the path of the ammer. 4. In a nailing machine, in combination, a suitable frame, a vertically movable power hammer and a rotatable cellular naillcontainer having its cells arranged in concentric series mounted on the frame, a chute -for receiving nails singly from the containerand being shiftable' radially as to the container, means actuated by the hammer in its vertical movement for turningthe container to bring i'ii .its cells successively into register with the chute, and a 'de and supporting arm ex-A ten l' downwardly toward and crossing 12o the pat Aofthe hammer, slotted from its end slot extending vertically beneath the chute in -all positions .of the latter.

'5. In a nailing machine, in combination, a frame, a detachable cellular nail container, a bottom plate for the container detachably nnected thereto but removable therewith having an opening for the discharge of nails 13o' thereon,

having an. opening for the discharge of nails therethrough, means-for locking the bottom plate against rotative movement, means for turning the body of the container, and means for locking together the bottom plate and body of the container. Y

7. In a nailing machine, in combination, a frame, a reoiprocable hammer head, a cellular nail container comprising a series of concentric cylindrical shells, a central frame, a series of partitions attached to the frame and extending radially outward, the ,shells having slots extending from their lower edges upward for the reception of the partitions and the partitions having slots extending from their upper edges downward for the reception of the shells, a series of intermediate partitions supported by and having slotted engagement with the shells, means for discharging the nails singly from the container, and means for guidingthe nails discharged from the container into the path of the head of the hammer.

8. In a nailing machine, in combination, a suitable frame, a nail container mounted means for discharging the nails singly from the container, a reciprocating hammer head, and a guide and supporting arm pivoted below the container and' extending obliquely downward toward and crossing the path of the head slotted from its endl and having its end curved upward, such arm forming. a chute for recelving nails discharged from the container and delivering them to and releasably supporting them in the path of the hammer.

9. In a nailing machine, a vertically rcciprocable hammer head, and a tilting slotted conveying plate normally extending obliquely downward across the in combination,

path of the head and having its end shaped to position a nail in line with the head.

10. In a nailin machine, in combination, a frame, a rotata )le nail container having a plurality of concentricseries of nail-receiving cells, a bottom plate for the container having an opening for the discharge of nails f therethrough, means permitting said plate to be adjusted radially with respect to the container to bring said opening into register with cach series of cells successively, a reciprocating hammer head and a guide and supporting'arm crossing the path of the hammer slotted from its end to receive and releasably support a nail under the head, the slot extending vertically beneath said opening in all positions of the latter.

WILLIAM N. OEHM.

HERBERT R. KEITHLEY. 

